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Please submit your abstract online AND mail a printed copy of your abstract form to
Mrs Ch. Trezzini, Centre de Neurosciences psychiatriques, Hopital de Cery, 1008 Prilly
Instructions for abstract submission
Guidelines for Abstract submission.
Each poster (abstract) must be sponsored by one member of the SSN or SSNB. Each member of the SSN or SSNB can sponsor only one abstract. However, the name of the sponsor
can appear on more than one abstract as co-author with another member or candidate member. Non-members must have Form B signed by a member
sponsor) or apply for membership to become candidate member of the SSN.
The poster size will be A0 (90 cm wide, 120 cm high).
If your abstract is selected for "Data Blitz presentation" or "Interesting Clinical Case Presentation" (see Program), you will be notified by e-mail before
December 20th, 2003.
Your abstract will appear in the list of abstracts that can be accessed in the preliminary program.
The deadline for abstract submission is November 15th, 2003.
ABSTRACT EXAMPLE
PHYSIOLOGICAL INPUTS FROM THE INFERIOR
COLLICULUS TO THE COCHLEAR NUCLEUS IN THE GUINEA PIG STUDIED IN IN
VITRO WHOLE BRAIN PREPARATION.
Jacomme A-V.1 ; Rouiller E.M.1 ; Ruygo D.K.2 and Babalian A.L.1
(1) Institute of Physiology, University of Fribourg, Switzerland
(2) Depts. Of Otolaryngology-HNS and Neuroscience, Johns Hopkins University,
Baltimore, MD, USA
The inferior colliculus (IC) is an obligatory synaptic station along
auditory pathways and is involved in processing both ascending and
descending information about sound stimuli. A major segment of the
descending auditory pathway from the IC includes projections to the
cochlear nucleus (CN). The physiological properties of descending
inputs from IC to the CN cells are not known. The objective of the
present experiments was to characterize the effects exerted by IC
projections onto CN neurons using the in vitro isolated whole brain
preparation of the guinea pig. The synaptic responses to electrical
stimulation of the inferior colliculi were recorded intracellularly
from identified (stained) neurons of the CN (n=28). Stimulation of
the ipsilateral (ICi) and contralateral (ICc) inferior colliculus
influen-ced a majority of recorded cells (86% and 75% respectively)
in all three CN subdivisions (anteroventral, posteroventral and dorsal).
Activation of ICi and ICc induced either excitatory (EPSP) or inhibitory
(IPSP) synaptic responses, whereas mixed responses were very rare.
In addition, ICc stimulation evoked antidromic activation of some
neurons. IPSPs were the more frequently observed type of synaptic
responses and represented 72% and 80% of responses evoked by ICc and
ICi stimulations, respectively. The latencies of synaptic potentials
ranged from 3.6 - 10.5 ms, suggesting predominant involvement of di-
and trisynaptic pathways. Fastest EPSPs had shorter latencies that
fastest IPSPs, possibly indicating more direct excitatory inputs than
inhibitory ones. We propose that excitatory transmission to CN cells
operate through direct IC projections to CN, whereas inhibitory responses
could be mediated by indirect IC pathway via periolivary nuclei neurons
projecting to CN. Further experiments are needed to test this hypothesis.
Supported by Swiss National Science Foundation (grant No.31-055836.98)
and NIH/NIDCD grants DC00232 and DC04395.
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Submit your Abstract
After submitting ONLINE do not forget to mail a copy of your abstract form
to Mrs Ch. Trezzini, Centre de Neurosciences psychiatriques, Hopital de Cery, 1008 Prilly
Web Design: Velibor Ilic
The Annual Swiss Society for Neuroscience
2004 Meeting
with
The Swiss Society for Behavioral Neurology
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